Fabrication of multi-scale periodic surface structures on Ti-6Al-4V by direct laser writing and direct laser interference patterning for modified wettability applications

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

  • D. Huerta-Murillo - , Universidad Politecnica de Madrid (Autor:in)
  • A. I. Aguilar-Morales - , Fraunhofer-Institut für Werkstoff- und Strahltechnik (Autor:in)
  • S. Alamri - , Fraunhofer-Institut für Werkstoff- und Strahltechnik (Autor:in)
  • J. T. Cardoso - , Universidad Politecnica de Madrid (Autor:in)
  • R. Jagdheesh - , Universidad Politecnica de Madrid (Autor:in)
  • A. F. Lasagni - , Professur für Laserbasierte Fertigung, Fraunhofer-Institut für Werkstoff- und Strahltechnik (Autor:in)
  • J. L. Ocana - , Universidad Politecnica de Madrid (Autor:in)

Abstract

In this work, hierarchical surface patterns fabricated on Ti-6Al-4V alloy combining two laser micro-machining techniques are presented. The used technologies are based on nanosecond Direct Laser Writing and picosecond Direct Laser Interference Patterning. Squared shape micro-cells with different hatch distances were produced by Direct Laser Writing with depths values in the micro-scale, forming a well-defined closed packet. Subsequently, cross-like periodic patterns were fabricated by means of Direct Laser Interference Patterning using a two-beam configuration, generating a dual-scale periodic surface structure in both micro- and nano-scale due to the formation of Laser-Induced Periodic Surface Structure after the picosecond process. As a result a triple hierarchical periodic surface structure was generated. The surface morphology of the irradiated area was characterized with scanning electron microscopy and confocal microscopy. Additionally, static contact angle measurements were made to analyze the wettability behavior of the structures, showing a hydrophobic behavior for the hierarchical structures. (C) 2017 Elsevier Ltd. All rights reserved.

Details

OriginalspracheEnglisch
Seiten (von - bis)134-142
Seitenumfang9
FachzeitschriftOptics and lasers in engineering
Jahrgang98
PublikationsstatusVeröffentlicht - Nov. 2017
Peer-Review-StatusJa

Externe IDs

Scopus 85021454367

Schlagworte

Schlagwörter

  • Direct laser interference patterning, Direct laser writing, Laser material processing, Laser-induced periodic surface structures, Ti-6Al-4V